Heading to Galvaston in a few days to jump aboard that big white ship again. We will be heading down there the day before and wanting to stop and see a few things along the way.
Spec's liquor store in Dallas, Aranda's Mexican bakery in Houston, Guido's fish restaurant at Galveston seawall, 36 hour tuna fishing trip out of Galveston.
There honestly isn't much of anything between Dallas and Houston. I'd make a speed run to Galveston, then spend the time I had to kill taking the ferry over to Bolivar Peninsula.